OraFAQ Forum: SQL & PL/SQL » Listing individual average price

Home » SQL & PL/SQL » SQL & PL/SQL » Listing individual average price (Oracle SQL)

Show: Today's Messages :: Polls :: Message Navigator
E-mail to friend

Listing individual average price [message #652479]

Thu, 09 June 2016 16:43

misy
Messages: 5
Registered: June 2016

Junior Member

I have 3 tables

Book
BookID
SalesPrice
WorkID

Author
AuthorID
Lastname
Firstname

Work
WorkID
Description
AuthorID

Question: How can I list individual author on their average sales price? I'm aint sure how to place the avg code.

My code:

SELECT Lastname,Firstname,Salesprice
FROM Author A JOIN Work W on A.AuthorID = W.WorkID
JOIN Book B on B.WorkID = W.WorkID
WHERE W.WorkID = B.Work ID

Report message to a moderator

Re: Listing individual average price [message #652480 is a reply to message #652479]

Thu, 09 June 2016 18:05

Barbara Boehmer
Messages: 9106
Registered: November 2002
Location: California, USA

Senior Member

Use

AVG(Salesprice)

instead of

Salesprice

and remember to GROUP BY any other columns, like Lastname and Firstname, at the end of your code.

Report message to a moderator

Re: Listing individual average price [message #652481 is a reply to message #652480]

Thu, 09 June 2016 19:26

BlackSwan
Messages: 26766
Registered: January 2009
Location: SoCal

Senior Member

Please read OraFAQ Forum Guide and How to use [code] tags and make your code easier to read.

Report message to a moderator

Re: Listing individual average price [message #652506 is a reply to message #652480]

Fri, 10 June 2016 12:00

misy
Messages: 5
Registered: June 2016

Junior Member

Thank you. It works.

Report message to a moderator

Previous Topic:	Query Date Ranges with select statement (merged 3)
Next Topic:	error 04063 creating view

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Fri Nov 21 13:15:31 CST 2025